/Engine/Plugins/Animation/IKRig/Source/IKRigEditor/Public/RetargetEditor/IKRetargetAnimInstanceProxy.h
Called when the anim instance is being initialized. If we are not using a blueprint instance, these nodes can be provided
virtual void GetCustomNodes ( [TArray](API\Runtime\Core\Containers\TArray)< [FAnimNode_Base](API\Runtime\Engine\Animation\FAnimNode_Base) * > & OutNodes )